Malicious PDF — malware analysis report

Static analysis result for SHA-256 6252f854ece31c8f…

MALICIOUS

PDF

187.0 KB Created: 2015-08-03 09:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 597323d465fc4641ec58d823e6c7bfd7 SHA-1: 34d7fd502c0d8696fca89b586619f65f45ab551f SHA-256: 6252f854ece31c8fc776c51b351822d0cbbcd99940f5bfb82b35fc5a27a63ad6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'http://botcraftman.ru/'. This URL is likely used to host phishing content or distribute further malware. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%D0%BE%D0%BA%D0%B5%D0%B0%D0%BD+%D0%B5%D0%BB%D1%8C%D0%B7%D0%B8+%D0%B7%D0%B5%D0%BC%D0%BB%D1%8F+2013+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4275/4275042_planer_5d_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4267/4267630_vuykup_nevestuy_scenariy_gibdd.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185694_diktantuy_dlya_2_klassa_po_russkomu_yazuyku_1_chetvert.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246cf.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246CF 3556 bytes
font_01_sfnt_off00025452.bin
b7f3873259e9c506b997ef45ceb594f9b1012f893ccbff2ba6283a8b7004ebce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25452 14608 bytes
font_02_sfnt_off00028257.bin
c0d5ba9d7e8c22c4fe2bd478f9e1bfd406166d70b5caa7d8b2c8f94fd3697abe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28257 14468 bytes
font_03_sfnt_off0002ad02.bin
4a9911619235239e9962573a902545f2fade5f99ce0cf877df7dff045e2f99b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD02 7200 bytes
font_04_sfnt_off0002c215.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C215 6084 bytes
font_05_sfnt_off0002d1aa.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1AA 3752 bytes

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